Compositor nodes are not affecting rendered video
To bring the result of your nodes to the VSE you need to have an Output->Composite Node at the end of your node chain. On the VSE add a scene strip (Add Scene->Scene) and disable Open GL Preview.



NOTE:

If you just want to render the events in the compositor as a file to later rework on the VSE then you need to disable the sequencer temporarily. Then your file output nodes will work as expected.